由于是个人练习用的，而且时间仓促，没有想好后再来写，尽请见谅！
//UtilTool.h
#pragma once #include <iostream> #include <string> #include <list> using namespace std;
//Event.h
#pragma once #include "UtilTool.h" enum EVENT_STATE { EAWAKE = 0, ESTART = 1, ETICK = 2, EEND = 3, ELEAVE = 4, EDESTROY = 5, ENORMAL = 6, ECLICK =7, EOVERLAP =8 }; class Event { public: Event() :mCurrentState(EVENT_STATE::EAWAKE) {} virtual void Awake() { cout << "This is basic awake!"<<endl; }; virtual void Start() { cout << "This is basic start!"<<endl; }; virtual void Tick() { cout << "This is basic tick!"<<endl; }; virtual void End() { cout << "This is basic end!"<<endl; }; virtual void Overlap() { cout << "This is basic overlap!"<<endl; }; virtual void Destroy() { cout << "This is basic destroy!"<<endl; }; EVENT_STATE mCurrentState; };
//Object.h
#pragma once #include "UtilTool.h" #include "Event.h" class Object:public Event { public: string mName; string mDesc; long long mId; Object(string name, string desc,long long id) :mName(name), mDesc(desc),mId(id) {} void ShowBaseSomeThing() { cout << "<--Id : " << mId << ";Name : " << mName << ";Desc :" << mDesc << "-->" << endl; } };
//TSubject.h
#pragma once template<typename T> class TSubject { public : virtual void Attach(T*) = 0; virtual void Detach(T*) = 0; virtual void Notify() = 0; };
//TConcreteSubject.h
#pragma once #include "UtilTool.h" #include "TSubject.h" #include "TObserver.h" #include "Event.h" template<typename T=TObserver> class TConcreteSubjectUI :public TSubject<typename T> { public: virtual void Attach(T *); virtual void Detach(T *); virtual void Notify(); private : static list<T*> *mObserverList; }; template<typename T> list<T*>* TConcreteSubjectUI<typename T>::mObserverList = new list<T*>(); template<typename T> void TConcreteSubjectUI<typename T>::Attach(T* observer) { mObserverList->push_back(observer); } template<typename T> void TConcreteSubjectUI<typename T>::Detach(T* observer) { mObserverList->remove(observer); } template<typename T> void TConcreteSubjectUI<typename T>::Notify() { list<T*>::iterator it ; for(it = mObserverList->begin(); it != mObserverList->end();++it) { TConcreteObserver<Object> *ob = (TConcreteObserver<Object>*)(*it); Object* obj = ob->GetObject(); ob->UpdateState(obj); }
}
//TObserver.h
#pragma once template<typename T> class TObserver { public : virtual void UpdateState(T*)=0; }; //TConcreteObserver.h
#pragma once #include "UtilTool.h" #include "TObserver.h" #include "Object.h" #include "Event.h" template<typename T=Object> class TConcreteObserver:public TObserver<typename T> { public : TConcreteObserver(Object *obj) :mObject(obj) {} virtual void UpdateState(T*); Object* GetObject(); private: Object* mObject; }; template<typename T> Object* TConcreteObserver<typename T>::GetObject() { return mObject; } template<typename T> void TConcreteObserver<typename T>::UpdateState(T* object) { Event *event = object; switch (event->mCurrentState) { case EVENT_STATE::EAWAKE: event->Awake(); break; case EVENT_STATE::ESTART: event->Start(); break; case EVENT_STATE::ETICK: event->Tick(); break; case EVENT_STATE::EEND: event->End(); break; case EVENT_STATE::EOVERLAP: event->Overlap(); break; case EVENT_STATE::EDESTROY: event->Destroy(); break; default: break; } Object* ob = object; ob->ShowBaseSomeThing(); }
//test.cpp
#include "UtilTool.h" #include "TObserver.h" #include "TSubject.h" #include "TConcreteObserver.h" #include "TConcreteSubject.h" int main() { TConcreteSubjectUI<TConcreteObserver<Object>> *tb = new TConcreteSubjectUI<TConcreteObserver<Object>>(); Object *obj01 = new Object("ZhangSan","BigHead",1); TConcreteObserver<Object> *tr = new TConcreteObserver<Object>(obj01); Object *obj02 = new Object("LiSi", "SmallHead", 2); TConcreteObserver<Object> *tr2 = new TConcreteObserver<Object>(obj02); tb->Attach(tr2); tb->Attach(tr); tb->Notify(); obj01->mCurrentState = EVENT_STATE::EOVERLAP; obj02->mCurrentState = EVENT_STATE::EOVERLAP; tb->Notify(); tb->Detach(tr2); tb->Notify(); system("pause"); return 0; }
//目录结构
//执行结果
